Problem with PDO::FETCH_ASSOC

Question

Hello, everybody.

I’m making a tag system for my blog. To get the tag id, I’m making a query using the IN operator.

I want you to return only the associative array.That’s why I use PDO::FETCH_ASSOC.

if($sql == true) {
    $result = $sql->fetchAll(PDO::FETCH_ASSOC);
}

But it returns the following error:

Fatal error: Uncaught Error: Class 'App\Models\PDO' not found in D:\xampp\htdocs\r\MeusProjetos\GreenCode3\App\Models\Editor.php:61 Stack trace: #0 D:\xampp\htdocs\r\MeusProjetos\GreenCode3\App\Controller\admin\editorController.php(45): App\Models\Editor->insert('O titulo', '13', Array, '<p>esse \xC3\xA9 o te...') #1 [internal function]: App\Controller\admin\editorController->insert('') #2 D:\xampp\htdocs\r\MeusProjetos\GreenCode3\App\Core\Core.php(101): call_user_func_array(Array, Array) #3 D:\xampp\htdocs\r\MeusProjetos\GreenCode3\index.php(15): App\Core\Core->run() #4 {main} thrown in D:\xampp\htdocs\r\MeusProjetos\GreenCode3\App\Models\Editor.php on line 61